Question Find the \( x \)-intercept of the following line. \[ y=\frac{8}{7} x+4 \]
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To find the \( x \)-intercept of the line given by the equation \( y = \frac{8}{7}x + 4 \), you need to set \( y \) to 0 and solve for \( x \). This gives: \[ 0 = \frac{8}{7}x + 4 \] Rearranging the equation: \[ -4 = \frac{8}{7}x \] Multiplying both sides by \( \frac{7}{8} \): \[ x = -4 \times \frac{7}{8} = -\frac{28}{8} = -\frac{7}{2} \] Thus, the \( x \)-intercept is \( x = -\frac{7}{2} \). When you're tackling similar problems, remember the formula for the \( x \)-intercept can be simplified: just set \( y = 0 \) and solve for \( x \). One common mistake is forgetting to rearrange the equation correctly—double-check your algebra! To explore further concepts and principles related to intercepts, check out resources like "Algebra for Dummies" or "The Art of Problem Solving" series that delve deep into graphing and equations.